package com.chenyu.util;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.*;

/**
 * date工具类
 * 框架类型转换
 */
public class DateUtil  {
    private final DateFormat[] dfs = {
            new SimpleDateFormat("yyyy年MM月dd日"),
            new SimpleDateFormat("yyyy-MM-dd"),
            new SimpleDateFormat("yyyy/MM/dd"),
    };


    public String convertToString(Map map, Object o) {
        Date date = (Date)o;
        return new SimpleDateFormat("yyyy-MM-dd").format(date);
    }

        // 用来全局控制 上一周，本周，下一周的周数变化
        private int weeks = 0;
        private int MaxDate;// 一月最大天数
        private int MaxYear;// 一年最大天数
        private static Calendar calendar = Calendar.getInstance();//实例化日历

        public DateUtil(){
            this.MaxYear = 365;
            this.MaxDate = 30;
        }

    public DateUtil(int MaxYear , int MaxDate ){
        this.MaxYear = MaxYear;
        this.MaxDate = MaxDate;
    }
        /**测试
         * @param args
         */
        public void main1(String[] args) {
            DateUtil tt = new DateUtil();
           // System.out.println("获取当天日期:" + tt.getNowTime("yyyy-MM-dd"));
            System.out.println("获取本周一日期:" + tt.getMondayOFWeek());
            System.out.println("获取本周日的日期~:" + tt.getCurrentWeekday());
            System.out.println("获取上周一日期:" + tt.getPreviousWeekday());
            System.out.println("获取上周日日期:" + tt.getPreviousWeekSunday());
            System.out.println("获取下周一日期:" + tt.getNextMonday());
            System.out.println("获取下周日日期:" + tt.getNextSunday());
           // System.out.println("获得相应周的周六的日期:" + tt.getNowTime("yyyy-MM-dd"));
            System.out.println("获取本月第一天日期:" + tt.getFirstDayOfMonth());
            System.out.println("获取本月最后一天日期:" + tt.getDefaultDay());
            System.out.println("获取上月第一天日期:" + tt.getPreviousMonthFirst());
            System.out.println("获取上月最后一天的日期:" + tt.getPreviousMonthEnd());
            System.out.println("获取下月第一天日期:" + tt.getNextMonthFirst());
            System.out.println("获取下月最后一天日期:" + tt.getNextMonthEnd());
            System.out.println("获取本年的第一天日期:" + tt.getCurrentYearFirst());
            System.out.println("获取本年最后一天日期:" + tt.getCurrentYearEnd());
            System.out.println("获取去年的第一天日期:" + tt.getPreviousYearFirst());
            System.out.println("获取去年的最后一天日期:" + tt.getPreviousYearEnd());
            System.out.println("获取明年第一天日期:" + tt.getNextYearFirst());
            System.out.println("获取明年最后一天日期:" + tt.getNextYearEnd());
            System.out.println("获取本季度第一天:" + tt.getThisSeasonFirstTime(11));
            System.out.println("获取本季度最后一天:" + tt.getThisSeasonFinallyTime(11));
            System.out.println("---------------->");
            System.out.println("获取当前月的第几周：" + tt.getWeekOfMonth());
            System.out.println("获取当前年份：" + tt.getYear());
            System.out.println("获取当前月份：" + tt.getMonth());
            System.out.println("获取今天在本年的第几天：" + tt.getDayOfYear());

            System.out.println("获得今天在本月的第几天(获得当前日)：" + tt.getDayOfMonth());
            System.out.println("获得今天在本周的第几天：" + tt.getDayOfWeek());
            System.out.println("获得半年后的日期：" + tt.convertDateToString(tt.getTimeYearNext()));
        }

        /**
         * 获得当前年份
         *
         * @return
         */
        public static int getYear() {
            return calendar.get(Calendar.YEAR);
        }

        /**
         * 获得当前月份
         *
         * @return
         */
        public static int getMonth() {
            return calendar.get(Calendar.MONTH) + 1;
        }

        /**
         * 获得今天在本年的第几天
         *
         * @return
         */
        public static int getDayOfYear() {
            return calendar.get(Calendar.DAY_OF_YEAR);
        }

        /**
         * 获得今天在本月的第几天(获得当前日)
         *
         * @return
         */
        public static int getDayOfMonth() {
            return calendar.get(Calendar.DAY_OF_MONTH);
        }

        /**
         * 获得今天在本周的第几天
         *
         * @return
         */
        public static int getDayOfWeek() {
            return calendar.get(Calendar.DAY_OF_WEEK);
        }

        /**
         * 获得今天是这个月的第几周
         *
         * @return
         */
        public static int getWeekOfMonth() {
            return calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH);
        }

        /**
         * 获得半年后的日期
         *
         * @return
         */
        public static Date getTimeYearNext() {
            calendar.add(Calendar.DAY_OF_YEAR, 183);
            return calendar.getTime();
        }

        public static String convertDateToString(Date dateTime){
            SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd");
            return df.format(dateTime);
        }

        /**
         * 得到二个日期间的间隔天数
         */
        public static String getTwoDay(String sj1, String sj2) {
            SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
            long day = 0;
            try {
                Date date = myFormatter.parse(sj1);
                Date mydate = myFormatter.parse(sj2);
                day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
            } catch (Exception e) {
                return "";
            }
            return day + "";
        }

        /**
         * 根据一个日期，返回是星期几的字符串
         *
         * @param sdate
         * @return
         */
        public static String getWeek(String sdate) {
            // 再转换为时间
            Date date = DateUtil.strToDate(sdate);
            Calendar c = Calendar.getInstance();
            c.setTime(date);
            // int hour=c.get(Calendar.DAY_OF_WEEK);
            // hour中存的就是星期几了，其范围 1~7
            // 1=星期日 7=星期六，其他类推
            return new SimpleDateFormat("EEEE").format(c.getTime());
        }

        /**
         * 将短时间格式字符串转换为时间 yyyy-MM-dd
         *
         * @param strDate
         * @return
         */
        public static Date strToDate(String strDate) {
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
            ParsePosition pos = new ParsePosition(0);
            Date strtodate = formatter.parse(strDate, pos);
            return strtodate;
        }

        /**
         * 两个时间之间的天数
         *
         * @param date1
         * @param date2
         * @return
         */
        public static long getDays(String date1, String date2) {
            if (date1 == null || date1.equals(""))
                return 0;
            if (date2 == null || date2.equals(""))
                return 0;
            // 转换为标准时间
            SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
            Date date = null;
            Date mydate = null;
            try {
                date = myFormatter.parse(date1);
                mydate = myFormatter.parse(date2);
            } catch (Exception e) {
            }
            long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
            return day;
        }

        // 计算当月最后一天,返回字符串
        public String getDefaultDay() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.set(Calendar.DATE, 1);// 设为当前月的1号
            lastDate.add(Calendar.MONTH, 1);// 加一个月，变为下月的1号
            lastDate.add(Calendar.DATE, -1);// 减去一天，变为当月最后一天

            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 上月第一天
        public String getPreviousMonthFirst() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.set(Calendar.DATE, 1);// 设为当前月的1号
            lastDate.add(Calendar.MONTH, -1);// 减一个月，变为下月的1号
            // lastDate.add(Calendar.DATE,-1);//减去一天，变为当月最后一天

            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 获取当月第一天
        public String getFirstDayOfMonth() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.set(Calendar.DATE, 1);// 设为当前月的1号
            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 获得本周星期日的日期
        public String getCurrentWeekday() {
            weeks = 0;
            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus + 6);
            Date monday = currentDate.getTime();

            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        // 获取当天时间
        public static Date getNowTime(String dateformat) throws ParseException {
            SimpleDateFormat dateFormat = new SimpleDateFormat(dateformat);// 可以方便地修改日期格式
            String hehe = dateFormat.format(new Date());
            return dateFormat.parse(hehe);
        }

        // 获得当前日期与本周日相差的天数
        private int getMondayPlus() {
            Calendar cd = Calendar.getInstance();
            // 获得今天是一周的第几天，星期日是第一天，星期二是第二天......
            int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK) - 1; // 因为按中国礼拜一作为第一天所以这里减1
            if (dayOfWeek == 1) {
                return 0;
            } else {
                return 1 - dayOfWeek;
            }
        }

        // 获得本周一的日期
        public String getMondayOFWeek() {
            weeks = 0;
            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus);
            Date monday = currentDate.getTime();

            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        // 获得相应周的周六的日期
        public String getSaturday() {
            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks + 6);
            Date monday = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        // 获得上周星期日的日期
        public String getPreviousWeekSunday() {
            weeks = 0;
            weeks--;
            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus + weeks);
            Date monday = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        // 获得上周星期一的日期
        public String getPreviousWeekday() {
            weeks--;
            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks);
            Date monday = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        // 获得下周星期一的日期
        public String getNextMonday() {
            weeks++;
            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus + 7);
            Date monday = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        // 获得下周星期日的日期
        public String getNextSunday() {

            int mondayPlus = this.getMondayPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 + 6);
            Date monday = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preMonday = df.format(monday);
            return preMonday;
        }

        private int getMonthPlus() {
            Calendar cd = Calendar.getInstance();
            int monthOfNumber = cd.get(Calendar.DAY_OF_MONTH);
            cd.set(Calendar.DATE, 1);// 把日期设置为当月第一天
            cd.roll(Calendar.DATE, -1);// 日期回滚一天，也就是最后一天
            MaxDate = cd.get(Calendar.DATE);
            if (monthOfNumber == 1) {
                return -MaxDate;
            } else {
                return 1 - monthOfNumber;
            }
        }

        // 获得上月最后一天的日期
        public String getPreviousMonthEnd() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.add(Calendar.MONTH, -1);// 减一个月
            lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天
            lastDate.roll(Calendar.DATE, -1);// 日期回滚一天，也就是本月最后一天
            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 获得下个月第一天的日期
        public String getNextMonthFirst() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.add(Calendar.MONTH, 1);// 减一个月
            lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天
            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 获得下个月最后一天的日期
        public String getNextMonthEnd() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.add(Calendar.MONTH, 1);// 加一个月
            lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天
            lastDate.roll(Calendar.DATE, -1);// 日期回滚一天，也就是本月最后一天
            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 获得明年最后一天的日期
        public String getNextYearEnd() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.add(Calendar.YEAR, 1);// 加一个年
            lastDate.set(Calendar.DAY_OF_YEAR, 1);
            lastDate.roll(Calendar.DAY_OF_YEAR, -1);
            str = sdf.format(lastDate.getTime());
            return str;
        }

        // 获得明年第一天的日期
        public String getNextYearFirst() {
            String str = "";
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            Calendar lastDate = Calendar.getInstance();
            lastDate.add(Calendar.YEAR, 1);// 加一个年
            lastDate.set(Calendar.DAY_OF_YEAR, 1);
            str = sdf.format(lastDate.getTime());
            return str;

        }

        // 获得本年有多少天
        private int getMaxYear() {
            Calendar cd = Calendar.getInstance();
            cd.set(Calendar.DAY_OF_YEAR, 1);// 把日期设为当年第一天
            cd.roll(Calendar.DAY_OF_YEAR, -1);// 把日期回滚一天。
            int MaxYear = cd.get(Calendar.DAY_OF_YEAR);
            return MaxYear;
        }

        private int getYearPlus() {
            Calendar cd = Calendar.getInstance();
            int yearOfNumber = cd.get(Calendar.DAY_OF_YEAR);// 获得当天是一年中的第几天
            cd.set(Calendar.DAY_OF_YEAR, 1);// 把日期设为当年第一天
            cd.roll(Calendar.DAY_OF_YEAR, -1);// 把日期回滚一天。
            int MaxYear = cd.get(Calendar.DAY_OF_YEAR);
            if (yearOfNumber == 1) {
                return -MaxYear;
            } else {
                return 1 - yearOfNumber;
            }
        }

        // 获得本年第一天的日期
        public String getCurrentYearFirst() {
            int yearPlus = this.getYearPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, yearPlus);
            Date yearDay = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preYearDay = df.format(yearDay);
            return preYearDay;
        }

        // 获得本年最后一天的日期 *
        public String getCurrentYearEnd() {
            Date date = new Date();
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式
            String years = dateFormat.format(date);
            return years + "-12-31";
        }

        // 获得上年第一天的日期 *
        public String getPreviousYearFirst() {
            Date date = new Date();
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式
            String years = dateFormat.format(date);
            int years_value = Integer.parseInt(years);
            years_value--;
            return years_value + "-1-1";
        }

        // 获得上年最后一天的日期
        public String getPreviousYearEnd() {
            weeks--;
            int yearPlus = this.getYearPlus();
            GregorianCalendar currentDate = new GregorianCalendar();
            currentDate.add(GregorianCalendar.DATE, yearPlus + MaxYear * weeks
                    + (MaxYear - 1));
            Date yearDay = currentDate.getTime();
            DateFormat df = DateFormat.getDateInstance();
            String preYearDay = df.format(yearDay);
            return preYearDay;
        }

        // 获得本季度第一天
        public String getThisSeasonFirstTime(int month) {
            int array[][] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 }, { 10, 11, 12 } };
            int season = 1;
            if (month >= 1 && month <= 3) {
                season = 1;
            }
            if (month >= 4 && month <= 6) {
                season = 2;
            }
            if (month >= 7 && month <= 9) {
                season = 3;
            }
            if (month >= 10 && month <= 12) {
                season = 4;
            }
            int start_month = array[season - 1][0];
            int end_month = array[season - 1][2];

            Date date = new Date();
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式
            String years = dateFormat.format(date);
            int years_value = Integer.parseInt(years);

            int start_days = 1;// years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);
            int end_days = getLastDayOfMonth(years_value, end_month);
            String seasonDate = years_value + "-" + start_month + "-" + start_days;
            return seasonDate;

        }

        // 获得本季度最后一天
        public String getThisSeasonFinallyTime(int month) {
            int array[][] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 }, { 10, 11, 12 } };
            int season = 1;
            if (month >= 1 && month <= 3) {
                season = 1;
            }
            if (month >= 4 && month <= 6) {
                season = 2;
            }
            if (month >= 7 && month <= 9) {
                season = 3;
            }
            if (month >= 10 && month <= 12) {
                season = 4;
            }
            int start_month = array[season - 1][0];
            int end_month = array[season - 1][2];

            Date date = new Date();
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式
            String years = dateFormat.format(date);
            int years_value = Integer.parseInt(years);

            int start_days = 1;// years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);
            int end_days = getLastDayOfMonth(years_value, end_month);
            String seasonDate = years_value + "-" + end_month + "-" + end_days;
            return seasonDate;

        }

        /**
         * 获取某年某月的最后一天
         *
         * @param year
         *            年
         * @param month
         *            月
         * @return 最后一天
         */
        private int getLastDayOfMonth(int year, int month) {
//            if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8
//                    || month == 10 || month == 12) {
//                return 31;
//            }
//            if (month == 4 || month == 6 || month == 9 || month == 11) {
//                return 30;
//            }
//            if (month == 2) {
//                if (isLeapYear(year)) {
//                    return 29;
//                } else {
//                    return 28;
//                }
//            }
            return 0;
        }

        /***
         *
         *获取所在月的第一天日期
         * */
        public static String getFirstDayOfMonth(String date) {

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            try {

                calendar.setTime(sdf.parse(date));
                calendar.set(Calendar.DATE, 1);

            } catch (ParseException e) {

                e.printStackTrace();
            }

            return sdf.format(calendar.getTime());
        }

        /***
         * 获取所在月的最后一天时间
         *
         * */
        public static String getLastDayOfMonth(String date) {

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            try {

                calendar.setTime(sdf.parse(date));
                calendar.set(Calendar.DATE, 1);// 设为当前月的1号
                calendar.add(Calendar.MONTH, 1);// 加一个月，变为下月的1号
                calendar.add(Calendar.DATE, -1);// 减去一天，变为当月最后一天

            } catch (ParseException e) {

                e.printStackTrace();
            }

            return sdf.format(calendar.getTime());
        }

        /***
         *
         * 上月第一天
         *
         * */
        public static String getPreviousMonthFirst(String date) {

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            try {

                calendar.setTime(sdf.parse(date));
                calendar.set(Calendar.DATE, 1);// 设为当前月的1号
                calendar.add(Calendar.MONTH, -1);// 减一个月，变为下月的1号

            } catch (ParseException e) {

                e.printStackTrace();
            }

            return sdf.format(calendar.getTime());
        }

        /***
         *
         * 上月最后一天
         *
         * */
        public static String getPreviousMonthEnd(String date) {

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            try {

                calendar.setTime(sdf.parse(date));
                calendar.add(Calendar.MONTH, -1);// 减一个月
                calendar.set(Calendar.DATE, 1);// 把日期设置为当月第一天
                calendar.roll(Calendar.DATE, -1);// 日期回滚一天，也就是本月最后一天

            } catch (ParseException e) {

                e.printStackTrace();
            }

            return sdf.format(calendar.getTime());
        }


        /***
         * 获取所在年的第一天
         *
         * **/
        public static String getFirstDayOfYear(String date) {

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            try {

                calendar.setTime(sdf.parse(date));
                calendar.set(Calendar.DAY_OF_YEAR, 1);


            } catch (ParseException e) {

                e.printStackTrace();
            }

            return sdf.format(calendar.getTime());
        }

        /**
         *
         * 当前时间去年的日期
         * */
        public static String getDayOfLastYear(String date) {

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            try {

                calendar.setTime(sdf.parse(date));
                calendar.add(Calendar.YEAR, -1);

            } catch (ParseException e) {

                e.printStackTrace();
            }

            return sdf.format(calendar.getTime());
        }

        /****
         *
         * 系统当前时间
         * */
        public static String getCurrentDate (){

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            return sdf.format(calendar.getTime());
        }

        /**
         * 得到几天前的时间
         * @param d
         * @param day
         * @return
         */
        public static Date getDateBefore(Date d,int day){
            Calendar now =Calendar.getInstance();
            now.setTime(d);
            now.set(Calendar.DATE,now.get(Calendar.DATE)-day);
            return now.getTime();
        }

        /**
         * 得到几天后的时间
         * @param d
         * @param day
         * @return
         */
        public static Date getDateAfter(Date d,int day){
            Calendar now =Calendar.getInstance();
            now.setTime(d);
            now.set(Calendar.DATE,now.get(Calendar.DATE)+day);
            return now.getTime();
        }


    /****
     *
     *
     * 计算月份差
     *
     * **/
    public static int getMonthSpace(String firstTime ,String lastTime ){
        SimpleDateFormat sdf =new SimpleDateFormat("yyyy-MM-dd");
        Calendar c1 = Calendar.getInstance();
        Calendar c2 = Calendar.getInstance();
        try {
            c1.setTime(sdf.parse(lastTime));
            c2.setTime(sdf.parse(firstTime));
        } catch (ParseException e) {
            e.printStackTrace();
        }
        int result =(c1.get(Calendar.YEAR)-c2.get(Calendar.YEAR))*12+(c1.get(Calendar.MONTH)-c2.get(Calendar.MONTH));
        return result ==0 ? 1 : result;
    }

    }
